[PATCH 6.0 0144/1073] cpufreq: amd_freq_sensitivity: Add missing pci_dev_put()

Greg Kroah-Hartman
2022-12-28T15:12:20Z

From: Xiongfeng Wang <wangxiongfeng2@huawei.com>

[ Upstream commit 91fda1f88c0968f1491ab150bb01690525af150a ]

pci_get_device() will increase the reference count for the returned
pci_dev. We need to use pci_dev_put() to decrease the reference count
after using pci_get_device(). Let's add it.

Fixes: 59a3b3a8db16 ("cpufreq: AMD: Ignore the check for ProcFeedback in ST/CZ")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/cpufreq/amd_freq_sensitivity.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/cpufreq/amd_freq_sensitivity.c b/drivers/cpufreq/amd_freq_sensitivity.c
index 6448e03bcf48..59b19b9975e8 100644
--- a/drivers/cpufreq/amd_freq_sensitivity.c
+++ b/drivers/cpufreq/amd_freq_sensitivity.c
@@ -125,6 +125,8 @@ static int __init amd_freq_sensitivity_init(void)
if (!pcidev) {
if (!boot_cpu_has(X86_FEATURE_PROC_FEEDBACK))
return -ENODEV;
+ } else {
+ pci_dev_put(pcidev);
}

if (rdmsrl_safe(MSR_AMD64_FREQ_SENSITIVITY_ACTUAL, &val))
--
2.35.1